The present invention relates to an Auto flood irrigation device and is preferred to irrigate the small field from canal automatically. This device has been invented to irrigate automatically irrespective of the any plot or any crop. This invention will be very helpful in the irrigation through canal to field. SUMMARY OF THE INVENTION The present invention will perform this process on its own and will divert the water from one small field to the next small field on its own. This invention will have to be placed in from of the small field. The device will do rest of the task. The present invention have T shaped device and put a door that is connected to a spring lock, in both the mechanism the locks opens at the same time and the direction of the water get reversed. In this invention the main function is of timer and electric device, which works, opens the lock at right time. As soon as lock opens, the door will slip with the help of spring and direction of water will reverse. In this T shaped invention, there are three heads, the main work of whose is to reverse the